Home / 18,929.16-26,122.26-10,972.92

Finding the Fourth Proportional to 18,929.16, 26,122.26 and 10,972.92

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Solution

The fourth proportional to 18,929.16, 26,122.26 and 10,972.92 is: 15,142.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.16 : 26,122.26 = 10,972.92 : x
  2. Step 2: Convert to fraction form
    18,929.16/26,122.26 = 10,972.92/x
  3. Step 3: Cross multiply
    18,929.16x = 26,122.26 × 10,972.92
  4. Step 4: Simplify right side
    18,929.16x = 286,637,469.20
  5. Step 5: Solve for x
    x = 286,637,469.20/18,929.16
  6. Step 6: Final answer
    x = 15,142.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.